By submitting this form you are requesting for the use of the Deltares-software executables of iMOD. iMOD is Deltares-software; the source code of iMOD is also available as free open source software at oss.deltares.nl. You may use the Deltares-software executables of iMOD without any remuneration to be paid to Deltares if you accept the iMOD Software License Agreement (iMOD License) which is offered to you as a PDF-file, see /web/iMOD/iMOD_Software_License_Agreement. Please go to the PDF-file of the iMOD License, read it and decide whether you want or do not want to accept the iMOD License. Without your acceptance of the iMOD License the use of the Deltares-executables of the iMOD-software is prohibited and illegal.

The iMOD software is distributed in the hope that it will be useful, but WITHOUT ANY GUARANTEE OR (IMPLIED) WARRANTY. Any use of the Deltares-executables of the iMOD-software is for your own risk. See the iMOD License for more details.

You must be registered to be able to download the source code and participate in forums.

Please click on "(Register)" in the very upper right corner of the screen. After following the instructions your login name will be shown (normally it looks like my.email.name.x) and you will receive an automatically generated e-mail with your password. Normally you can Sign In as soon as you receive the e-mail. Occasionally you have to wait, sometimes even more than 15 minutes, before you can Sign In.

After registration please "(Sign In)" in the very upper right corner of the screen.
To download the iMOD source code go to Download in the menu bar and select 'source code'. Just follow the steps as indicated.

Necessary source code and libraries to compile the iMOD Graphical User Interface:\BIN - should contain your binary after compiling the source;\BMP - contains bitmaps for iMOD;\CUR - contains cursors for iMOD;\ICO - contains icons for iMOD;\SRC - contains the fortran source code, subdivided in different folders;\VS2008 - contains two Solution files for Visual Studio 2008 to compile iMOD.\LIB - should contain libraries for third party software (not included in this repository)\WINTERACTER - should contain the Winteracter 10.0 or higher library (www.winteracter.com)\DELFTIO - should containt the Deltares IO library, needed to read in SOBEK files:\NETCDF - should contain the NetCDF 3.0 library\TUTORIALS - contains several tutorial data sets as describe on the iMOD Manual:\TUT1_MAP_DISPLAY\TUT2_DATA_MAP_OPER\TUT3_MAP_ANALYSE\TUT4_INITIAL_MODELING\TUT5_SOLID_BUILDING\TUT6_MODEL_SIMULATION\TUT7_SCENARIO_TOOLreadme.txt - this file

iMOD is partly based on the USGS MODFLOW2005 source code; for iMOD the USGS MODFLOW2005 source code has been expanded and extensively modified by Stichting Deltares. The resulting Deltares version of MODFLOW is also coupled with MetaSWAP (for simulating the vadose zone; Alterra, Wageningen University); the source code of MetaSWAP is also open source and should be downloaded here (the source code is not part of the iMOD svn-repository).

Some details from the ReadMe.txt file:

- A Visual Studio 2010 solution is included (folder VS2010).

- For now, the code only runs on Windows.

- The main part of the iMOD utilities are located in the IMODUTL folder.

- The main program is called driver.f90, located in the DRIVER folder.

- This controller file calls a component based version of MODFLOW-2005, which can be seen as a low-level OpenMI implementation. Source code of MODFLOW is located in MF2005.

- In this folder, the file mf2005_comp.f shows the different phases in execution and the interface routines in case of a coupled code.

- This distributed code is prepared to couple MODFLOW with MetaSWAP, TRANSOL or MOZART. However, this code does not provide codes for MetaSWAP, TRANSOL or MOZART.

- For using iPEST: you should always pre-compile imod_pest.F90 with the IPEST flag. Note that in this release (iMOD 3.0) iPEST is not fully tested yet (in iMODFLOW 2.7 iPEST was fully tested).

The iMOD user manual contains several tutorials; tutorial 4 enables you to create your first groundwater flow model from scratch using iMOD. The necessary tutorial datasets are also made available via the iMOD svn-repository in the folder <iMOD-GUI tutorial dataset>; to download the tutorial data set please click here.

Create the basic input files that are necessary to simulate a simple groundwater flow model;

Enhance the model with an extraction well to compute the drawdown caused by the well;

Simulate flowlines that describe the catchment area of the well

Experiment with extraction rates to compute the maximum sustainable yield without extracting water from the sea.

Tutorial 5 of the iMOD user manualfocusses on visualizing your model output (e.g. flowlines) and combine it with other geo-data of the subsurface such as borehole data. You can interactively edit and visualize the subsurface in 3D.